Primitive arthropods, Biology

Assignment Help:

Primitive Arthropods

The primitive arthropods, Onychophora (for example Peripatus) have a series of paired legs which are not jointed but have a ringed appearance because of the presence of rows of papillae on them. Each leg consists of two parts, a conical proximal part along with their extrinsic muscles, and a small distal part comprising a pair of claws.

183_Primitive Arthropods.png

Figure: Peripatus lateral view of head

The limbs are protracted and retracted. Using these legs, and through extension and contraction of the body for working the legs they crawl. While a segment is extended, the legs are lifted and moved forward; subsequent effective stroke provides the animals a pushing force.


Related Discussions:- Primitive arthropods

Mode of nutrition , What is the mode of nutrition in fish,human,amoeba,scor...

What is the mode of nutrition in fish,human,amoeba,scorpian & toad ?

Secondary induction, Secondary Induction The two primary inductive ev...

Secondary Induction The two primary inductive events that we have described so far are significant in the patterning of early embryo. But there are another such signaling eve

Build a complete evolutionary branch of vertebrates, Q. What are the six cr...

Q. What are the six criteria used to build a complete evolutionary branch of vertebrates? Dichotomy in each of the six following criteria builds the vertebrate evolutionary bra

Viriods and prions, Viriods and Prions Viroids        In 1971, T.O...

Viriods and Prions Viroids        In 1971, T.O.Diener reported that the  spinde tuber disease of potato causing gnarling and cracking of the tuber, is caused by multiplica

How is extracellular digestion related to cellular, How is extracellular di...

How is extracellular digestion related to cellular and tissue specialization? Several of specialized cells and tissues appeared with extracellular digestion to give enzymes and

Excretion in flatworm, EXCRETIO N IN FLATWORM - Main organs are flame ...

EXCRETIO N IN FLATWORM - Main organs are flame cells, having bundle of cillia. It receives solute and water from surrounding tissue fluid by ultra filtration & discharge th

Personal protective equipment, Personal Protective Equipment These eq...

Personal Protective Equipment These equipments are essentially required during working to protect face, eyes, respiratory system hands and clothes. Additionally in various in

Can you define musculoskeletal system, Q. Which are the organs that are par...

Q. Which are the organs that are part of the musculoskeletal system? The key tissues and organs that are part of the musculoskeletal system in humans are the cartilages, the mu

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd